Fix error in operator precedence

Author: emmanue1

src/main/java/org/jd/core/v1/model/javasyntax/expression/BinaryOperatorExpression.java

@@ -61,6 +61,10 @@ public int getPriority() {
         return priority;
     }
 
+    public void setPriority(int priority) {
+        this.priority = priority;
+    }
+
     @Override
     public void accept(ExpressionVisitor visitor) {
         visitor.visit(this);

src/main/java/org/jd/core/v1/service/converter/classfiletojavasyntax/util/ByteCodeParser.java

@@ -1401,6 +1401,7 @@ private static boolean stackContainsFieldReference(DefaultStack<Expression> stac
 
     private static Expression createAssignment(BinaryOperatorExpression boe, String operator) {
         boe.setOperator(operator);
+        boe.setPriority(16);
         return boe;
     }